Im an eat when Im hungry person
I get up for work at 5am, get home for 10 am, and eat my first meal at 2pm, which depending on how I feel could be a big bowl of greek yoghurt, a pile of berries, and maybe chopped apple or pear, oats or bio and me ( grains ) , or it could be a big open sandwich - slice of dark rye bread, topped with beets, cucumber, salad leaves, pickles, cottage cheese and either some cold cuts or a tin of mackerel , or I might have big ham and cheese omelette with mushrooms tomatoes, and a side salad or I might have a big bowl of Dahl
Whatever it is will be protein and fibre rich - both keep you fuller for longer
Ive swapped out a lot of useless white carbs for grains and beans to get that full feeling - quinoa and couscous , lentils, chickpeas, beans of all description. Pasta is wholemeal and a weighed portion , bread is rare, rye or wholemeal when I need it
The only thing I do keep an eye on is added oils - I dont avoid but use sparingly, animal fats - again not off limits but not daily, cheese and butter . Butter I do have to avoid but I weigh and measure cheese and milk . Everything else its eat till Im full
Evening meals are normal everyday family type meals - HM lasagne, curry, pizza - all included - but at least a 3rd to half my plate will be veg
Tuna and rice, whilst there's nothing wrong with it, it's boring, tasteless and quite carb heavy , and to be honest Id be hungry again not long after. I would have opened a tin of mixed beans, added some chopped tomatoes, onions, cucumber, added some oil free dressing - lemon , balsamic etc and stirred the tuna through , sprinkled on some chilli flakes - high fibre, protein rich and twice as filling
Beans and lentils are protein as well as fibre